A facile one-pot, two-step process for the synthesis of ethyl 2-imino--4-methyl-2,3-dihydrothiazole-5-carboxylates via the cyclocondensation of ethyl 3-oxo-2-thiocyanatobutanoate with a variety of hydrazine and hydrazide derivatives was developed. Ethyl 3-oxo-2-thiocyanatobutanoate itself was synthesized as an intermediate from the reaction of ethyl 2-chloroacetoacetate with potassium thiocyanate (KSCN). The molecular structures of these newly synthesized compounds were elucidated based on elemental analysis and spectral data.Развијен је нов поступак синтезе етил-2-имино-4-метил-2,3-дихидротиазол-5-карбоксилата, у једном реакционом кораку циклокондензације етил-3-оксо-2-тиоцијанатобутаноата и хидразина или хидразинских деривата. Полазно једињење етил-3-оксо-2--тиоцијанатобутаноат синтетисан је из етил-2-хлорацетата и калијум-тиоцијаната (KSCN). Структура добијених једињења одређена је на основу резултата спектроскопске и елементалне анализе.
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